Katie - there is some really good stuff here. I really like lyrics with small details that take us to a unique but real place. So putting a log on the fire in the first line is a superb start.
The chorus the same, the kettle and cups is a great image that I'd say lots of us can relate to.
I think there's room for more sense-based images here - so for me verses 1 and 3 are strong because they show us how you feel inside and verses 2 and 4 don't (though sometimes you need to progress the story of course!). I wonder if there's a smell or sound that you could work into those verses to really bring over the feeling? Those last lines are a bit well worn so maybe there's another way to say the same in a more original way?
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I also really appreciate what you're doing early on with internal rhymes (frame, game, sane, face). You don't really continue that in the second half so if you could then I think this would be an ever stronger write.
Lots of ideas from me but not many concrete suggestions I'm afraid. Still this is very personal so you should tell it in your way, of course. Looks really promising to me though.